How to check which activity is showing on screen

Question

I want to check which activity is on the front, from a class that is no activity (that's just another class that does some actions for me, but not bounded with any activity).

How can I check from this class which activity is actually showing on the screen?

Nothing understand. please be specific about your issue in your question..dude — Shadow, Feb 13 '13 at 11:25
It sounds like really bad practice what you are trying to do :S — Sebastian Breit, Feb 13 '13 at 11:25
I need only name of activity which is actually showing, but not in this activity, but in class with some methods, which is not activity — user1302569, Feb 13 '13 at 11:26
Use a stack inside a singleton, put on onCreate and pop on onDestoy — Pozzo Apps, Feb 13 '13 at 11:27
http://stackoverflow.com/questions/3393908/how-to-get-any-identifier-of-the-topmost-activity — Leonidos, Feb 13 '13 at 11:27

score 7 · Accepted Answer · answered Feb 13 '13 at 11:30

You can use ActivityManager to get this. Following is the sample code:

ActivityManager am = (ActivityManager) this.getSystemService(ACTIVITY_SERVICE);


 // get the info from the currently running task
 List< ActivityManager.RunningTaskInfo > taskInfo = am.getRunningTasks(1);

 Log.d("topActivity", "CURRENT Activity ::" + taskInfo.get(0).topActivity.getClassName());

 ComponentName componentInfo = taskInfo.get(0).topActivity;
 String packageName = componentInfo.getPackageName();

You will need the following permission on your manifest:

uses-permission android:name="android.permission.GET_TASKS"

Source

score 0 · Answer 2 · answered Feb 13 '13 at 11:32

Another way is to create in a custom Application object a member called "Activity lastActivityShown" and in all onCreate of all Activities you can getApplication().setLastActivityShown(this) in this way you dont need permissions. You can also create a BaseActivity that have this logic and get all Activities extends this.

How to check which activity is showing on screen

2 Answers2